Cav3.3 is a calcium channel of the T-type that is involved in many brain processes. Contrary to other calcium channels Cav3.3 is activated by relatively low/negative voltages. Cav3.3 is not a classic cannabinoid receptor but its activity is modulated by cannabinoids. Since cannabinoids have a physiological effect on Cav3.3 it is effectively a cannabinoid receptor.
Brain (cerebellum, occipital lobe, frontal lobe, amygdale, caudate nucleus, hippocampus > temporal lobe, putamen > substantia nigra, medulla). Isocortex, olfactory > striatum > cortical subplate, hippocampus > thalamus, hypothalamus, pallidum, midbrain, medulla. Soma and entire dendrite in cortical CA3, hippocampal and subicular neurons.
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